阳煤二矿巷道过富水断层防治水技术研究与应用

Research and Application of Water Prevention and Control Technology for the Roadway Passing through Water-rich Fault in Yangquan No.2 Mine

为保障阳煤二矿15^(#)煤层五采区集中回风巷过导水断层间的安全,通过理论分析、瞬变电磁法勘探、井下钻探等手段,探查F6断层的富水性、分析其水源。结果表明:F6断层导水性强、补给充沛,通过钻孔无法短期内有效的疏放,采用全断面钻孔注浆工艺进行堵水,注浆后验证钻孔涌水量极小,保障了巷道的安全掘进又节约了工期。

In order to ensure the safety of the concentrated return air roadway passing through the water-conducting fault in thefifth mining area of the 15^(#)coal seam in Yangquan No.2 Mine,the water-rich property of the F6 fault is explored and its water source is analyzed by means of theoretical analysis,transient electromagnetic method exploration and underground drilling.The results show that the F6 fault has strong water conductivity and abundant supplies,and can not be effectively drained in a short time through drilling.The full-face drilling and grouting technology is used for water plugging.After grouting,it is verified that the water inflow of the drilling hole is very small,which ensures the safe driving of the roadway and saves the construction period.